Butterfly Valve with Pneumatic actuator with feed back, mechanism Pneumatic Operated with Hand Wheel, Valve, Size- 2 inch, Valve Type, Butterfly Valve with Pneumatic, actuator with feed back mechanism Pneumatic Operated, with Hand Wheel, Valve Size- 3 inch, Valve Type Wafer Type, Size- 4 inch, Valve Type Wafer, Butterfly Valve with, Pneumatic actuator with feed back mechanism Pneumatic, Operated with Hand Wheel, Valve Size- 6 inch, Wafer, Butterfly Valve with Pneumatic actuator with feed, back mechanism Pneumatic Operated with Hand Wheel, Valve Size- 8 inch, Valve Size- 10 inch